Preliminary geologic map of the John Day quadrangle, Oregon /
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| Corporate Author: | |
| Format: | Government Document Map |
| Language: | English |
| Published: |
Washington, D.C. :
U.S. Geological Survey,
1956.
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| Series: | Mineral investigations field studies ;
MF 51. |
| Subjects: |
| Item Description: | Relief shown by spot heights. "Geology by T.P. Thayer ... 1939-1953." Includes 2 col. cross sections and explanation of map units. Cartographic material. |
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| Physical Description: | 1 map : color ; 45 x 38 cm. on sheet 71 x 74 cm. folded in envelope 30 x 24 cm. |